APA (7th ed.) Citation

Ahlfors, L. V. (1952). On the characterization of hyperbolic Riemann surfaces.

Chicago Style (17th ed.) Citation

Ahlfors, Lars Valerian. On the Characterization of Hyperbolic Riemann Surfaces. Helsinki, 1952.

MLA (9th ed.) Citation

Ahlfors, Lars Valerian. On the Characterization of Hyperbolic Riemann Surfaces. 1952.

Warning: These citations may not always be 100% accurate.